Vray workflow question.

Become a member of the CGSociety

Connect, Share, and Learn with our Large Growing CG Art Community. It's Free!

THREAD CLOSED
 
Thread Tools Search this Thread Display Modes
Old 04 April 2013   #1
Vray workflow question.

Hi everyone.

Lately my boss came up with an idea for compositing template. His main idea is as follow.

1) Diffuse + occlusion as base. Also SSS if needed.

2) is the pass the lighters work on. Pretty much rendering out -only- raw light passes with nothing else so the lighter can work faster without having to compute what's already in (1)

I'm wondering what's everyone thought on this workflow?

My boss showed us some feature animation composite example using this technique. However I'm still not convinced that it's the best use of Vray's power - I believe Vray materials wouldn't show their full potential unless you let lights interact with their real colors. Not to mention SSS are tied to each light I'm not even sure how to separate that pass from lighting. Probably even trickier with motion blur.
 
Old 04 April 2013   #2
You're going to be fighting noise like mad on that type of workflow.

Before you start down that road, render out a sequence and then compare:

lighting vs (rawlighting * diffuse)

reflection vs (rawreflection * reflectionfilter)

gi vs (rawgi * diffuse)

And do this in both "bright" and "dark" scenes.

Also, baking occlusion into your diffuse pass might seem like a good idea, but you're basically breaking energy conservation and getting away from one of the biggest benefits of physically plausible renderers like VRay.

If you're rendering toonish/stylized stuff it may be fine, but if you're going for realism you might want to look into balancing your fill lighting or turning off stuff like lightcache that flatten everything out and make the scene go low-contrast.

--T
 
Old 04 April 2013   #3
I'd check the Vray forums
http://www.chaosgroup.com/forums/vbulletin/forum.php (you may need to log in)
Vlado may mention that the irrad pass samples are driven by specific materials.. hence bad results with a workflow like that.
 
Old 04 April 2013   #4
Thread automatically closed

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.
__________________
CGTalk Policy/Legalities
Note that as CGTalk Members, you agree to the terms and conditions of using this website.
 
Thread Closed share thread



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
CGSociety
Society of Digital Artists
www.cgsociety.org

Powered by vBulletin
Copyright 2000 - 2006,
Jelsoft Enterprises Ltd.
Minimize Ads
Forum Jump
Miscellaneous

All times are GMT. The time now is 06:54 PM.


Powered by vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.